AIMA.Core.Environment.EightPuzzle.EightPuzzleFunctionFactory.EPResultFunction.result C# (CSharp) Method

            public Object result(Object s, Action a)
            {
                EightPuzzleBoard board = (EightPuzzleBoard)s;

                if (EightPuzzleBoard.UP.Equals(a)
                        && board.canMoveGap(EightPuzzleBoard.UP))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapUp();
                    return newBoard;
                }
                else if (EightPuzzleBoard.DOWN.Equals(a)
                      && board.canMoveGap(EightPuzzleBoard.DOWN))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapDown();
                    return newBoard;
                }
                else if (EightPuzzleBoard.LEFT.Equals(a)
                      && board.canMoveGap(EightPuzzleBoard.LEFT))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapLeft();
                    return newBoard;
                }
                else if (EightPuzzleBoard.RIGHT.Equals(a)
                      && board.canMoveGap(EightPuzzleBoard.RIGHT))
                {
                    EightPuzzleBoard newBoard = new EightPuzzleBoard(board);
                    newBoard.moveGapRight();
                    return newBoard;
                }

                // The Action is not understood or is a NoOp
                // the result will be the current state.
                return s;
            }
        }